1304022320 has 20 divisors (see below), whose sum is σ = 3031852080. Its totient is φ = 521608896.

The previous prime is 1304022319. The next prime is 1304022361. The reversal of 1304022320 is 232204031.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1304022320² = 3400948422116364800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8150060 + ... + 8150219.

It is an arithmetic number, because the mean of its divisors is an integer number (151592604).

Almost surely, 2^1304022320 is an apocalyptic number.

1304022320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304022320 is an abundant number, since it is smaller than the sum of its proper divisors (1727829760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1304022320 is a wasteful number, since it uses less digits than its factorization.

1304022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16300292 (or 16300286 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1304022320 is about 36111.2492168299. The cubic root of 1304022320 is about 1092.5173475663.

Adding to 1304022320 its reverse (232204031), we get a palindrome (1536226351).

The spelling of 1304022320 in words is "one billion, three hundred four million, twenty-two thousand, three hundred twenty".